#define _CRT_SECURE_NO_WARNINGS

class Solution {
public:
    int findPeakElement(vector<int>& nums) {
        int left = 0, right = nums.size() - 1;
        while (left < right)
        {
            int mid = (right - left) / 2 + left;

            if (nums[mid] > nums[mid + 1])
            {
                if (mid == 0 || nums[mid] > nums[mid - 1])
                    return mid;
                else
                    right = mid - 1;
                // right = mid;
            }
            else
                left = mid + 1;
        }

        return left;
    }
};